code: def forward(self, x):
      x = self.l1(x)
      x = self.l2(x)
      x = self.l3(x)
  
      return x
  
file_path: labml/client/test/test_model_probe.py
imports: import torch
  from labml import monit
  from labml.internal.analytics.models import ModelProbe
  from labml.logger import inspect
  from torch import nn
label_desc: Use image node_id 2 for calling the Model obj's underlying member method code with example usage: obj.forward(x) and returns: x